My team was finally strong enough to complete OM and the prize was still available in pool A. Nice Ark!
Congrats, he is a great addition to any lineup and IMO one of the most versatile arks currently available. Decide how you want to use him and place him next to arks to allow him to achieve this purpose and he’ll soon be your favorite! I initially moved him out of my lineup until I realized the role I needed filled, and how he could do it, now I wouldn’t pvp without him. 
OM arks are always available if you finish the mission and that was your first OM ark…
Its a great ark; by Knocking back a trio of stunners you effectively have winning leverage, which translates to a 12 vs 15 ark advantage as stunners are meant to be played very early to give one the initiative which is very important in top level play.
With Gigarock coming into play, you must carefully consider the placement cause it can easily fall prey to its powerful AoE move, especially if you want to take full advantage of the Wind-Army move; you’re setting up a trio of Air Arks only to be wiped away. I have this crazy idea to precede the Air Trio with a Fire Trio to ensure that Gigarock doesn’t survive to wipe the Air Arks away in one fallen swoop.